/* Print values for GNU debugger GDB.
- Copyright (C) 1986-2018 Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbtypes.h"
#include "value.h"
#include "language.h"
+#include "c-lang.h"
#include "expression.h"
#include "gdbcore.h"
#include "gdbcmd.h"
#include "charset.h"
#include "arch-utils.h"
#include "cli/cli-utils.h"
+#include "cli/cli-option.h"
#include "cli/cli-script.h"
-#include "format.h"
+#include "cli/cli-style.h"
+#include "gdbsupport/format.h"
#include "source.h"
-#include "common/byte-vector.h"
+#include "gdbsupport/byte-vector.h"
+#include "gdbsupport/gdb_optional.h"
/* Last specified output format. */
/* Append the source filename and linenumber of the symbol when
printing a symbolic value as `<symbol at filename:linenum>' if set. */
-static int print_symbol_filename = 0;
+static bool print_symbol_filename = false;
static void
show_print_symbol_filename (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
static int current_display_number;
+/* Last allocated display number. */
+
+static int display_number;
+
struct display
{
- /* Chain link to next auto-display item. */
- struct display *next;
+ display (const char *exp_string_, expression_up &&exp_,
+ const struct format_data &format_, struct program_space *pspace_,
+ const struct block *block_)
+ : exp_string (exp_string_),
+ exp (std::move (exp_)),
+ number (++display_number),
+ format (format_),
+ pspace (pspace_),
+ block (block_),
+ enabled_p (true)
+ {
+ }
/* The expression as the user typed it. */
- char *exp_string;
+ std::string exp_string;
/* Expression to be evaluated and displayed. */
expression_up exp;
const struct block *block;
/* Status of this display (enabled or disabled). */
- int enabled_p;
+ bool enabled_p;
};
-/* Chain of expressions whose values should be displayed
- automatically each time the program stops. */
-
-static struct display *display_chain;
-
-static int display_number;
-
-/* Walk the following statement or block through all displays.
- ALL_DISPLAYS_SAFE does so even if the statement deletes the current
- display. */
-
-#define ALL_DISPLAYS(B) \
- for (B = display_chain; B; B = B->next)
+/* Expressions whose values should be displayed automatically each
+ time the program stops. */
-#define ALL_DISPLAYS_SAFE(B,TMP) \
- for (B = display_chain; \
- B ? (TMP = B->next, 1): 0; \
- B = TMP)
+static std::vector<std::unique_ptr<struct display>> all_displays;
/* Prototypes for local functions. */
}
if (options->format == 0 || options->format == 's'
- || TYPE_CODE (type) == TYPE_CODE_REF
- || TYPE_CODE (type) == TYPE_CODE_ARRAY
- || TYPE_CODE (type) == TYPE_CODE_STRING
- || TYPE_CODE (type) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION
- || TYPE_CODE (type) == TYPE_CODE_NAMESPACE)
+ || type->code () == TYPE_CODE_REF
+ || type->code () == TYPE_CODE_ARRAY
+ || type->code () == TYPE_CODE_STRING
+ || type->code () == TYPE_CODE_STRUCT
+ || type->code () == TYPE_CODE_UNION
+ || type->code () == TYPE_CODE_NAMESPACE)
value_print (val, stream, options);
else
/* User specified format, so don't look to the type to tell us
what to do. */
- val_print_scalar_formatted (type,
- value_embedded_offset (val),
- val,
- options, size, stream);
+ value_print_scalar_formatted (val, options, size, stream);
}
/* Return builtin floating point type of same length as TYPE.
{
struct gdbarch *gdbarch = get_type_arch (type);
unsigned int len = TYPE_LENGTH (type);
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ enum bfd_endian byte_order = type_byte_order (type);
/* String printing should go through val_print_scalar_formatted. */
gdb_assert (options->format != 's');
/* If the value is a pointer, and pointers and addresses are not the
same, then at this point, the value's length (in target bytes) is
gdbarch_addr_bit/TARGET_CHAR_BIT, not TYPE_LENGTH (type). */
- if (TYPE_CODE (type) == TYPE_CODE_PTR)
+ if (type->code () == TYPE_CODE_PTR)
len = gdbarch_addr_bit (gdbarch) / TARGET_CHAR_BIT;
/* If we are printing it as unsigned, truncate it in case it is actually
/* Historically gdb has printed floats by first casting them to a
long, and then printing the long. PR cli/16242 suggests changing
- this to using C-style hex float format. */
- gdb::byte_vector converted_float_bytes;
- if (TYPE_CODE (type) == TYPE_CODE_FLT
- && (options->format == 'o'
- || options->format == 'x'
- || options->format == 't'
- || options->format == 'z'
- || options->format == 'd'
- || options->format == 'u'))
- {
- LONGEST val_long = unpack_long (type, valaddr);
- converted_float_bytes.resize (TYPE_LENGTH (type));
- store_signed_integer (converted_float_bytes.data (), TYPE_LENGTH (type),
- byte_order, val_long);
- valaddr = converted_float_bytes.data ();
+ this to using C-style hex float format.
+
+ Biased range types must also be unbiased here; the unbiasing is
+ done by unpack_long. */
+ gdb::byte_vector converted_bytes;
+ /* Some cases below will unpack the value again. In the biased
+ range case, we want to avoid this, so we store the unpacked value
+ here for possible use later. */
+ gdb::optional<LONGEST> val_long;
+ if ((type->code () == TYPE_CODE_FLT
+ && (options->format == 'o'
+ || options->format == 'x'
+ || options->format == 't'
+ || options->format == 'z'
+ || options->format == 'd'
+ || options->format == 'u'))
+ || (type->code () == TYPE_CODE_RANGE
+ && TYPE_RANGE_DATA (type)->bias != 0))
+ {
+ val_long.emplace (unpack_long (type, valaddr));
+ converted_bytes.resize (TYPE_LENGTH (type));
+ store_signed_integer (converted_bytes.data (), TYPE_LENGTH (type),
+ byte_order, *val_long);
+ valaddr = converted_bytes.data ();
}
/* Printing a non-float type as 'f' will interpret the data as if it were
of a floating-point type of the same length, if that exists. Otherwise,
the data is printed as integer. */
char format = options->format;
- if (format == 'f' && TYPE_CODE (type) != TYPE_CODE_FLT)
+ if (format == 'f' && type->code () != TYPE_CODE_FLT)
{
type = float_type_from_length (type);
- if (TYPE_CODE (type) != TYPE_CODE_FLT)
+ if (type->code () != TYPE_CODE_FLT)
format = 0;
}
print_decimal_chars (stream, valaddr, len, false, byte_order);
break;
case 0:
- if (TYPE_CODE (type) != TYPE_CODE_FLT)
+ if (type->code () != TYPE_CODE_FLT)
{
print_decimal_chars (stream, valaddr, len, !TYPE_UNSIGNED (type),
byte_order);
{
struct value_print_options opts = *options;
- LONGEST val_long = unpack_long (type, valaddr);
+ if (!val_long.has_value ())
+ val_long.emplace (unpack_long (type, valaddr));
opts.format = 0;
if (TYPE_UNSIGNED (type))
else
type = builtin_type (gdbarch)->builtin_true_char;
- value_print (value_from_longest (type, val_long), stream, &opts);
+ value_print (value_from_longest (type, *val_long), stream, &opts);
}
break;
case 'a':
{
- CORE_ADDR addr = unpack_pointer (type, valaddr);
-
- print_address (gdbarch, addr, stream);
+ if (!val_long.has_value ())
+ val_long.emplace (unpack_long (type, valaddr));
+ print_address (gdbarch, *val_long, stream);
}
break;
int offset = 0;
int line = 0;
- if (build_address_symbolic (gdbarch, addr, do_demangle, &name, &offset,
- &filename, &line, &unmapped))
+ if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name,
+ &offset, &filename, &line, &unmapped))
return 0;
fputs_filtered (leadin, stream);
fputs_filtered ("<*", stream);
else
fputs_filtered ("<", stream);
- fputs_filtered (name.c_str (), stream);
+ fputs_styled (name.c_str (), function_name_style.style (), stream);
if (offset != 0)
- fprintf_filtered (stream, "+%u", (unsigned int) offset);
+ fprintf_filtered (stream, "%+d", offset);
/* Append source filename and line number if desired. Give specific
line # of this addr, if we have it; else line # of the nearest symbol. */
if (print_symbol_filename && !filename.empty ())
{
+ fputs_filtered (line == -1 ? " in " : " at ", stream);
+ fputs_styled (filename.c_str (), file_name_style.style (), stream);
if (line != -1)
- fprintf_filtered (stream, " at %s:%d", filename.c_str (), line);
- else
- fprintf_filtered (stream, " in %s", filename.c_str ());
+ fprintf_filtered (stream, ":%d", line);
}
if (unmapped)
fputs_filtered ("*>", stream);
int
build_address_symbolic (struct gdbarch *gdbarch,
CORE_ADDR addr, /* IN */
- int do_demangle, /* IN */
+ bool do_demangle, /* IN */
+ bool prefer_sym_over_minsym, /* IN */
std::string *name, /* OUT */
int *offset, /* OUT */
std::string *filename, /* OUT */
}
}
- /* First try to find the address in the symbol table, then
- in the minsyms. Take the closest one. */
+ /* Try to find the address in both the symbol table and the minsyms.
+ In most cases, we'll prefer to use the symbol instead of the
+ minsym. However, there are cases (see below) where we'll choose
+ to use the minsym instead. */
/* This is defective in the sense that it only finds text symbols. So
really this is kind of pointless--we should make sure that the
name_location = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (symbol));
if (do_demangle || asm_demangle)
- name_temp = SYMBOL_PRINT_NAME (symbol);
+ name_temp = symbol->print_name ();
else
- name_temp = SYMBOL_LINKAGE_NAME (symbol);
+ name_temp = symbol->linkage_name ();
}
if (msymbol.minsym != NULL
if (msymbol.minsym != NULL)
{
- if (BMSYMBOL_VALUE_ADDRESS (msymbol) > name_location || symbol == NULL)
+ /* Use the minsym if no symbol is found.
+
+ Additionally, use the minsym instead of a (found) symbol if
+ the following conditions all hold:
+ 1) The prefer_sym_over_minsym flag is false.
+ 2) The minsym address is identical to that of the address under
+ consideration.
+ 3) The symbol address is not identical to that of the address
+ under consideration. */
+ if (symbol == NULL ||
+ (!prefer_sym_over_minsym
+ && BMSYMBOL_VALUE_ADDRESS (msymbol) == addr
+ && name_location != addr))
{
/* If this is a function (i.e. a code address), strip out any
non-address bits. For instance, display a pointer to the
|| MSYMBOL_TYPE (msymbol.minsym) == mst_solib_trampoline)
addr = gdbarch_addr_bits_remove (gdbarch, addr);
- /* The msymbol is closer to the address than the symbol;
- use the msymbol instead. */
symbol = 0;
name_location = BMSYMBOL_VALUE_ADDRESS (msymbol);
if (do_demangle || asm_demangle)
- name_temp = MSYMBOL_PRINT_NAME (msymbol.minsym);
+ name_temp = msymbol.minsym->print_name ();
else
- name_temp = MSYMBOL_LINKAGE_NAME (msymbol.minsym);
+ name_temp = msymbol.minsym->linkage_name ();
}
}
if (symbol == NULL && msymbol.minsym == NULL)
&& name_location + max_symbolic_offset > name_location)
return 1;
- *offset = addr - name_location;
+ *offset = (LONGEST) addr - name_location;
*name = name_temp;
print_address (struct gdbarch *gdbarch,
CORE_ADDR addr, struct ui_file *stream)
{
- fputs_filtered (paddress (gdbarch, addr), stream);
+ fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
print_address_symbolic (gdbarch, addr, stream, asm_demangle, " ");
}
{
if (opts->addressprint)
{
- fputs_filtered (paddress (gdbarch, addr), stream);
+ fputs_styled (paddress (gdbarch, addr), address_style.style (), stream);
print_address_symbolic (gdbarch, addr, stream, do_demangle, " ");
}
else
count += branch_delay_insns;
}
printf_filtered ("\n");
- gdb_flush (gdb_stdout);
}
if (need_to_update_next_address)
fmt.format, cmdname);
}
-/* Parse print command format string into *FMTP and update *EXPP.
+/* Parse print command format string into *OPTS and update *EXPP.
CMDNAME should name the current command. */
void
print_command_parse_format (const char **expp, const char *cmdname,
- struct format_data *fmtp)
+ value_print_options *opts)
{
const char *exp = *expp;
+ /* opts->raw value might already have been set by 'set print raw-values'
+ or by using 'print -raw-values'.
+ So, do not set opts->raw to 0, only set it to 1 if /r is given. */
if (exp && *exp == '/')
{
+ format_data fmt;
+
exp++;
- *fmtp = decode_format (&exp, last_format, 0);
- validate_format (*fmtp, cmdname);
- last_format = fmtp->format;
+ fmt = decode_format (&exp, last_format, 0);
+ validate_format (fmt, cmdname);
+ last_format = fmt.format;
+
+ opts->format = fmt.format;
+ opts->raw = opts->raw || fmt.raw;
}
else
{
- fmtp->count = 1;
- fmtp->format = 0;
- fmtp->size = 0;
- fmtp->raw = 0;
+ opts->format = 0;
}
*expp = exp;
}
-/* Print VAL to console according to *FMTP, including recording it to
- the history. */
+/* See valprint.h. */
void
-print_value (struct value *val, const struct format_data *fmtp)
+print_value (value *val, const value_print_options &opts)
{
- struct value_print_options opts;
int histindex = record_latest_value (val);
annotate_value_history_begin (histindex, value_type (val));
annotate_value_history_value ();
- get_formatted_print_options (&opts, fmtp->format);
- opts.raw = fmtp->raw;
-
- print_formatted (val, fmtp->size, &opts, gdb_stdout);
+ print_formatted (val, 0, &opts, gdb_stdout);
printf_filtered ("\n");
annotate_value_history_end ();
}
-/* Evaluate string EXP as an expression in the current language and
- print the resulting value. EXP may contain a format specifier as the
- first argument ("/x myvar" for example, to print myvar in hex). */
+/* Implementation of the "print" and "call" commands. */
static void
-print_command_1 (const char *exp, int voidprint)
+print_command_1 (const char *args, int voidprint)
{
struct value *val;
- struct format_data fmt;
+ value_print_options print_opts;
- print_command_parse_format (&exp, "print", &fmt);
+ get_user_print_options (&print_opts);
+ /* Override global settings with explicit options, if any. */
+ auto group = make_value_print_options_def_group (&print_opts);
+ gdb::option::process_options
+ (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group);
- if (exp && *exp)
+ print_command_parse_format (&args, "print", &print_opts);
+
+ const char *exp = args;
+
+ if (exp != nullptr && *exp)
{
expression_up expr = parse_expression (exp);
val = evaluate_expression (expr.get ());
val = access_value_history (0);
if (voidprint || (val && value_type (val) &&
- TYPE_CODE (value_type (val)) != TYPE_CODE_VOID))
- print_value (val, &fmt);
+ value_type (val)->code () != TYPE_CODE_VOID))
+ print_value (val, print_opts);
+}
+
+/* See valprint.h. */
+
+void
+print_command_completer (struct cmd_list_element *ignore,
+ completion_tracker &tracker,
+ const char *text, const char * /*word*/)
+{
+ const auto group = make_value_print_options_def_group (nullptr);
+ if (gdb::option::complete_options
+ (tracker, &text, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group))
+ return;
+
+ const char *word = advance_to_expression_complete_word_point (tracker, text);
+ expression_completer (ignore, tracker, text, word);
}
static void
info_symbol_command (const char *arg, int from_tty)
{
struct minimal_symbol *msymbol;
- struct objfile *objfile;
struct obj_section *osect;
CORE_ADDR addr, sect_addr;
int matches = 0;
error_no_arg (_("address"));
addr = parse_and_eval_address (arg);
- ALL_OBJSECTIONS (objfile, osect)
- {
- /* Only process each object file once, even if there's a separate
- debug file. */
- if (objfile->separate_debug_objfile_backlink)
- continue;
-
- sect_addr = overlay_mapped_address (addr, osect);
-
- if (obj_section_addr (osect) <= sect_addr
- && sect_addr < obj_section_endaddr (osect)
- && (msymbol
- = lookup_minimal_symbol_by_pc_section (sect_addr, osect).minsym))
+ for (objfile *objfile : current_program_space->objfiles ())
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
{
- const char *obj_name, *mapped, *sec_name, *msym_name;
- const char *loc_string;
-
- matches = 1;
- offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
- mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
- sec_name = osect->the_bfd_section->name;
- msym_name = MSYMBOL_PRINT_NAME (msymbol);
-
- /* Don't print the offset if it is zero.
- We assume there's no need to handle i18n of "sym + offset". */
- std::string string_holder;
- if (offset)
+ /* Only process each object file once, even if there's a separate
+ debug file. */
+ if (objfile->separate_debug_objfile_backlink)
+ continue;
+
+ sect_addr = overlay_mapped_address (addr, osect);
+
+ if (obj_section_addr (osect) <= sect_addr
+ && sect_addr < obj_section_endaddr (osect)
+ && (msymbol
+ = lookup_minimal_symbol_by_pc_section (sect_addr,
+ osect).minsym))
{
- string_holder = string_printf ("%s + %u", msym_name, offset);
- loc_string = string_holder.c_str ();
- }
- else
- loc_string = msym_name;
-
- gdb_assert (osect->objfile && objfile_name (osect->objfile));
- obj_name = objfile_name (osect->objfile);
-
- if (MULTI_OBJFILE_P ())
- if (pc_in_unmapped_range (addr, osect))
- if (section_is_overlay (osect))
- printf_filtered (_("%s in load address range of "
- "%s overlay section %s of %s\n"),
- loc_string, mapped, sec_name, obj_name);
- else
- printf_filtered (_("%s in load address range of "
- "section %s of %s\n"),
- loc_string, sec_name, obj_name);
- else
- if (section_is_overlay (osect))
- printf_filtered (_("%s in %s overlay section %s of %s\n"),
- loc_string, mapped, sec_name, obj_name);
- else
- printf_filtered (_("%s in section %s of %s\n"),
- loc_string, sec_name, obj_name);
- else
- if (pc_in_unmapped_range (addr, osect))
- if (section_is_overlay (osect))
- printf_filtered (_("%s in load address range of %s overlay "
- "section %s\n"),
- loc_string, mapped, sec_name);
+ const char *obj_name, *mapped, *sec_name, *msym_name;
+ const char *loc_string;
+
+ matches = 1;
+ offset = sect_addr - MSYMBOL_VALUE_ADDRESS (objfile, msymbol);
+ mapped = section_is_mapped (osect) ? _("mapped") : _("unmapped");
+ sec_name = osect->the_bfd_section->name;
+ msym_name = msymbol->print_name ();
+
+ /* Don't print the offset if it is zero.
+ We assume there's no need to handle i18n of "sym + offset". */
+ std::string string_holder;
+ if (offset)
+ {
+ string_holder = string_printf ("%s + %u", msym_name, offset);
+ loc_string = string_holder.c_str ();
+ }
else
- printf_filtered (_("%s in load address range of section %s\n"),
- loc_string, sec_name);
- else
- if (section_is_overlay (osect))
- printf_filtered (_("%s in %s overlay section %s\n"),
- loc_string, mapped, sec_name);
+ loc_string = msym_name;
+
+ gdb_assert (osect->objfile && objfile_name (osect->objfile));
+ obj_name = objfile_name (osect->objfile);
+
+ if (current_program_space->multi_objfile_p ())
+ if (pc_in_unmapped_range (addr, osect))
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in load address range of "
+ "%s overlay section %s of %s\n"),
+ loc_string, mapped, sec_name, obj_name);
+ else
+ printf_filtered (_("%s in load address range of "
+ "section %s of %s\n"),
+ loc_string, sec_name, obj_name);
+ else
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in %s overlay section %s of %s\n"),
+ loc_string, mapped, sec_name, obj_name);
+ else
+ printf_filtered (_("%s in section %s of %s\n"),
+ loc_string, sec_name, obj_name);
else
- printf_filtered (_("%s in section %s\n"),
- loc_string, sec_name);
+ if (pc_in_unmapped_range (addr, osect))
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in load address range of %s overlay "
+ "section %s\n"),
+ loc_string, mapped, sec_name);
+ else
+ printf_filtered
+ (_("%s in load address range of section %s\n"),
+ loc_string, sec_name);
+ else
+ if (section_is_overlay (osect))
+ printf_filtered (_("%s in %s overlay section %s\n"),
+ loc_string, mapped, sec_name);
+ else
+ printf_filtered (_("%s in section %s\n"),
+ loc_string, sec_name);
+ }
}
- }
if (matches == 0)
printf_filtered (_("No symbol matches %s.\n"), arg);
}
{
struct objfile *objfile = msymbol.objfile;
- gdbarch = get_objfile_arch (objfile);
+ gdbarch = objfile->arch ();
load_addr = BMSYMBOL_VALUE_ADDRESS (msymbol);
printf_filtered ("Symbol \"");
fprintf_symbol_filtered (gdb_stdout, exp,
current_language->la_language, DMGL_ANSI);
printf_filtered ("\" is at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (" in a file compiled without debugging");
section = MSYMBOL_OBJ_SECTION (objfile, msymbol.minsym);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (",\n -- loaded at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (),
+ gdb_stdout);
printf_filtered (" in overlay section %s",
section->the_bfd_section->name);
}
}
printf_filtered ("Symbol \"");
- fprintf_symbol_filtered (gdb_stdout, SYMBOL_PRINT_NAME (sym),
+ fprintf_symbol_filtered (gdb_stdout, sym->print_name (),
current_language->la_language, DMGL_ANSI);
printf_filtered ("\" is ");
val = SYMBOL_VALUE (sym);
case LOC_LABEL:
printf_filtered ("a label at address ");
load_addr = SYMBOL_VALUE_ADDRESS (sym);
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (",\n -- loaded at ");
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (" in overlay section %s",
section->the_bfd_section->name);
}
case LOC_STATIC:
printf_filtered (_("static storage at address "));
load_addr = SYMBOL_VALUE_ADDRESS (sym);
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
case LOC_BLOCK:
printf_filtered (_("a function at address "));
load_addr = BLOCK_ENTRY_PC (SYMBOL_BLOCK_VALUE (sym));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr), address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
{
struct bound_minimal_symbol msym;
- msym = lookup_bound_minimal_symbol (SYMBOL_LINKAGE_NAME (sym));
+ msym = lookup_bound_minimal_symbol (sym->linkage_name ());
if (msym.minsym == NULL)
printf_filtered ("unresolved");
else
{
load_addr = BMSYMBOL_VALUE_ADDRESS (msym);
printf_filtered (_("static storage at address "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (), gdb_stdout);
if (section_is_overlay (section))
{
load_addr = overlay_unmapped_address (load_addr, section);
printf_filtered (_(",\n -- loaded at "));
- fputs_filtered (paddress (gdbarch, load_addr), gdb_stdout);
+ fputs_styled (paddress (gdbarch, load_addr),
+ address_style.style (),
+ gdb_stdout);
printf_filtered (_(" in overlay section %s"),
section->the_bfd_section->name);
}
val = coerce_ref (val);
/* In rvalue contexts, such as this, functions are coerced into
pointers to functions. This makes "x/i main" work. */
- if (/* last_format == 'i' && */
- TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
+ if (value_type (val)->code () == TYPE_CODE_FUNC
&& VALUE_LVAL (val) == lval_memory)
next_address = value_address (val);
else
fmt.raw = 0;
}
- innermost_block.reset ();
- expression_up expr = parse_expression (exp);
-
- newobj = new display ();
+ innermost_block_tracker tracker;
+ expression_up expr = parse_expression (exp, &tracker);
- newobj->exp_string = xstrdup (exp);
- newobj->exp = std::move (expr);
- newobj->block = innermost_block.block ();
- newobj->pspace = current_program_space;
- newobj->number = ++display_number;
- newobj->format = fmt;
- newobj->enabled_p = 1;
- newobj->next = NULL;
-
- if (display_chain == NULL)
- display_chain = newobj;
- else
- {
- struct display *last;
-
- for (last = display_chain; last->next != NULL; last = last->next)
- ;
- last->next = newobj;
- }
+ newobj = new display (exp, std::move (expr), fmt,
+ current_program_space, tracker.block ());
+ all_displays.emplace_back (newobj);
if (from_tty)
do_one_display (newobj);
dont_repeat ();
}
-static void
-free_display (struct display *d)
-{
- xfree (d->exp_string);
- delete d;
-}
-
/* Clear out the display_chain. Done when new symtabs are loaded,
since this invalidates the types stored in many expressions. */
void
-clear_displays (void)
+clear_displays ()
{
- struct display *d;
-
- while ((d = display_chain) != NULL)
- {
- display_chain = d->next;
- free_display (d);
- }
+ all_displays.clear ();
}
/* Delete the auto-display DISPLAY. */
static void
delete_display (struct display *display)
{
- struct display *d;
-
gdb_assert (display != NULL);
- if (display_chain == display)
- display_chain = display->next;
-
- ALL_DISPLAYS (d)
- if (d->next == display)
- {
- d->next = display->next;
- break;
- }
-
- free_display (display);
+ auto iter = std::find_if (all_displays.begin (),
+ all_displays.end (),
+ [=] (const std::unique_ptr<struct display> &item)
+ {
+ return item.get () == display;
+ });
+ gdb_assert (iter != all_displays.end ());
+ all_displays.erase (iter);
}
/* Call FUNCTION on each of the displays whose numbers are given in
static void
map_display_numbers (const char *args,
- void (*function) (struct display *,
- void *),
- void *data)
+ gdb::function_view<void (struct display *)> function)
{
int num;
warning (_("bad display number at or near '%s'"), p);
else
{
- struct display *d, *tmp;
-
- ALL_DISPLAYS_SAFE (d, tmp)
- if (d->number == num)
- break;
- if (d == NULL)
+ auto iter = std::find_if (all_displays.begin (),
+ all_displays.end (),
+ [=] (const std::unique_ptr<display> &item)
+ {
+ return item->number == num;
+ });
+ if (iter == all_displays.end ())
printf_unfiltered (_("No display number %d.\n"), num);
else
- function (d, data);
+ function (iter->get ());
}
}
}
-/* Callback for map_display_numbers, that deletes a display. */
-
-static void
-do_delete_display (struct display *d, void *data)
-{
- delete_display (d);
-}
-
/* "undisplay" command. */
static void
return;
}
- map_display_numbers (args, do_delete_display, NULL);
+ map_display_numbers (args, delete_display);
dont_repeat ();
}
{
int within_current_scope;
- if (d->enabled_p == 0)
+ if (!d->enabled_p)
return;
/* The expression carries the architecture that was used at parse time.
if (d->exp == NULL)
{
- TRY
+ try
{
- innermost_block.reset ();
- d->exp = parse_expression (d->exp_string);
- d->block = innermost_block.block ();
+ innermost_block_tracker tracker;
+ d->exp = parse_expression (d->exp_string.c_str (), &tracker);
+ d->block = tracker.block ();
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (const gdb_exception &ex)
{
/* Can't re-parse the expression. Disable this display item. */
- d->enabled_p = 0;
+ d->enabled_p = false;
warning (_("Unable to display \"%s\": %s"),
- d->exp_string, ex.message);
+ d->exp_string.c_str (), ex.what ());
return;
}
- END_CATCH
}
if (d->block)
{
if (d->pspace == current_program_space)
- within_current_scope = contained_in (get_selected_block (0), d->block);
+ within_current_scope = contained_in (get_selected_block (0), d->block,
+ true);
else
within_current_scope = 0;
}
annotate_display_expression ();
- puts_filtered (d->exp_string);
+ puts_filtered (d->exp_string.c_str ());
annotate_display_expression_end ();
if (d->format.count != 1 || d->format.format == 'i')
annotate_display_value ();
- TRY
+ try
{
struct value *val;
CORE_ADDR addr;
addr = gdbarch_addr_bits_remove (d->exp->gdbarch, addr);
do_examine (d->format, d->exp->gdbarch, addr);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
- fprintf_filtered (gdb_stdout, _("<error: %s>\n"), ex.message);
+ fprintf_filtered (gdb_stdout, _("%p[<error: %s>%p]\n"),
+ metadata_style.style ().ptr (), ex.what (),
+ nullptr);
}
- END_CATCH
}
else
{
annotate_display_expression ();
- puts_filtered (d->exp_string);
+ puts_filtered (d->exp_string.c_str ());
annotate_display_expression_end ();
printf_filtered (" = ");
get_formatted_print_options (&opts, d->format.format);
opts.raw = d->format.raw;
- TRY
+ try
{
struct value *val;
val = evaluate_expression (d->exp.get ());
print_formatted (val, d->format.size, &opts, gdb_stdout);
}
- CATCH (ex, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &ex)
{
- fprintf_filtered (gdb_stdout, _("<error: %s>"), ex.message);
+ fprintf_styled (gdb_stdout, metadata_style.style (),
+ _("<error: %s>"), ex.what ());
}
- END_CATCH
printf_filtered ("\n");
}
void
do_displays (void)
{
- struct display *d;
-
- for (d = display_chain; d; d = d->next)
- do_one_display (d);
+ for (auto &d : all_displays)
+ do_one_display (d.get ());
}
/* Delete the auto-display which we were in the process of displaying.
void
disable_display (int num)
{
- struct display *d;
-
- for (d = display_chain; d; d = d->next)
+ for (auto &d : all_displays)
if (d->number == num)
{
- d->enabled_p = 0;
+ d->enabled_p = false;
return;
}
printf_unfiltered (_("No display number %d.\n"), num);
static void
info_display_command (const char *ignore, int from_tty)
{
- struct display *d;
-
- if (!display_chain)
+ if (all_displays.empty ())
printf_unfiltered (_("There are no auto-display expressions now.\n"));
else
printf_filtered (_("Auto-display expressions now in effect:\n\
Num Enb Expression\n"));
- for (d = display_chain; d; d = d->next)
+ for (auto &d : all_displays)
{
printf_filtered ("%d: %c ", d->number, "ny"[(int) d->enabled_p]);
if (d->format.size)
d->format.format);
else if (d->format.format)
printf_filtered ("/%c ", d->format.format);
- puts_filtered (d->exp_string);
- if (d->block && !contained_in (get_selected_block (0), d->block))
+ puts_filtered (d->exp_string.c_str ());
+ if (d->block && !contained_in (get_selected_block (0), d->block, true))
printf_filtered (_(" (cannot be evaluated in the current context)"));
printf_filtered ("\n");
- gdb_flush (gdb_stdout);
}
}
-/* Callback fo map_display_numbers, that enables or disables the
- passed in display D. */
-
-static void
-do_enable_disable_display (struct display *d, void *data)
-{
- d->enabled_p = *(int *) data;
-}
-
-/* Implamentation of both the "disable display" and "enable display"
+/* Implementation of both the "disable display" and "enable display"
commands. ENABLE decides what to do. */
static void
-enable_disable_display_command (const char *args, int from_tty, int enable)
+enable_disable_display_command (const char *args, int from_tty, bool enable)
{
if (args == NULL)
{
- struct display *d;
-
- ALL_DISPLAYS (d)
+ for (auto &d : all_displays)
d->enabled_p = enable;
return;
}
- map_display_numbers (args, do_enable_disable_display, &enable);
+ map_display_numbers (args,
+ [=] (struct display *d)
+ {
+ d->enabled_p = enable;
+ });
}
/* The "enable display" command. */
static void
enable_display_command (const char *args, int from_tty)
{
- enable_disable_display_command (args, from_tty, 1);
+ enable_disable_display_command (args, from_tty, true);
}
/* The "disable display" command. */
static void
disable_display_command (const char *args, int from_tty)
{
- enable_disable_display_command (args, from_tty, 0);
+ enable_disable_display_command (args, from_tty, false);
}
/* display_chain items point to blocks and expressions. Some expressions in
static void
clear_dangling_display_expressions (struct objfile *objfile)
{
- struct display *d;
struct program_space *pspace;
/* With no symbol file we cannot have a block or expression from it. */
gdb_assert (objfile->pspace == pspace);
}
- for (d = display_chain; d != NULL; d = d->next)
+ for (auto &d : all_displays)
{
if (d->pspace != pspace)
continue;
- if (lookup_objfile_from_block (d->block) == objfile
+ struct objfile *bl_objf = nullptr;
+ if (d->block != nullptr)
+ {
+ bl_objf = block_objfile (d->block);
+ if (bl_objf->separate_debug_objfile_backlink != nullptr)
+ bl_objf = bl_objf->separate_debug_objfile_backlink;
+ }
+
+ if (bl_objf == objfile
|| (d->exp != NULL && exp_uses_objfile (d->exp.get (), objfile)))
- {
- d->exp.reset ();
- d->block = NULL;
- }
+ {
+ d->exp.reset ();
+ d->block = NULL;
+ }
}
}
\f
{
if (!name)
- name = SYMBOL_PRINT_NAME (var);
+ name = var->print_name ();
+
+ fprintf_filtered (stream, "%s%ps = ", n_spaces (2 * indent),
+ styled_string (variable_name_style.style (), name));
- fprintf_filtered (stream, "%s%s = ", n_spaces (2 * indent), name);
- TRY
+ try
{
struct value *val;
struct value_print_options opts;
function. */
frame = NULL;
}
- CATCH (except, RETURN_MASK_ERROR)
+ catch (const gdb_exception_error &except)
{
- fprintf_filtered(stream, "<error reading variable %s (%s)>", name,
- except.message);
+ fprintf_styled (stream, metadata_style.style (),
+ "<error reading variable %s (%s)>", name,
+ except.what ());
}
- END_CATCH
fprintf_filtered (stream, "\n");
}
/* Subroutine of ui_printf to simplify it.
Print VALUE to STREAM using FORMAT.
- VALUE is a C-style string on the target. */
+ VALUE is a C-style string either on the target or
+ in a GDB internal variable. */
static void
printf_c_string (struct ui_file *stream, const char *format,
struct value *value)
{
- gdb_byte *str;
- CORE_ADDR tem;
- int j;
+ const gdb_byte *str;
- tem = value_as_address (value);
- if (tem == 0)
+ if (value_type (value)->code () != TYPE_CODE_PTR
+ && VALUE_LVAL (value) == lval_internalvar
+ && c_is_string_type_p (value_type (value)))
{
- DIAGNOSTIC_PUSH
- DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
- fprintf_filtered (stream, format, "(null)");
- DIAGNOSTIC_POP
- return;
- }
+ size_t len = TYPE_LENGTH (value_type (value));
- /* This is a %s argument. Find the length of the string. */
- for (j = 0;; j++)
- {
- gdb_byte c;
+ /* Copy the internal var value to TEM_STR and append a terminating null
+ character. This protects against corrupted C-style strings that lack
+ the terminating null char. It also allows Ada-style strings (not
+ null terminated) to be printed without problems. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
- QUIT;
- read_memory (tem + j, &c, 1);
- if (c == 0)
- break;
+ memcpy (tem_str, value_contents (value), len);
+ tem_str [len] = 0;
+ str = tem_str;
}
+ else
+ {
+ CORE_ADDR tem = value_as_address (value);;
+
+ if (tem == 0)
+ {
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, format, "(null)");
+ DIAGNOSTIC_POP
+ return;
+ }
+
+ /* This is a %s argument. Find the length of the string. */
+ size_t len;
- /* Copy the string contents into a string inside GDB. */
- str = (gdb_byte *) alloca (j + 1);
- if (j != 0)
- read_memory (tem, str, j);
- str[j] = 0;
+ for (len = 0;; len++)
+ {
+ gdb_byte c;
+
+ QUIT;
+ read_memory (tem + len, &c, 1);
+ if (c == 0)
+ break;
+ }
+
+ /* Copy the string contents into a string inside GDB. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + 1);
+
+ if (len != 0)
+ read_memory (tem, tem_str, len);
+ tem_str[len] = 0;
+ str = tem_str;
+ }
DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
/* Subroutine of ui_printf to simplify it.
Print VALUE to STREAM using FORMAT.
- VALUE is a wide C-style string on the target. */
+ VALUE is a wide C-style string on the target or
+ in a GDB internal variable. */
static void
printf_wide_c_string (struct ui_file *stream, const char *format,
struct value *value)
{
- gdb_byte *str;
- CORE_ADDR tem;
- int j;
+ const gdb_byte *str;
+ size_t len;
struct gdbarch *gdbarch = get_type_arch (value_type (value));
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- struct type *wctype = lookup_typename (current_language, gdbarch,
+ struct type *wctype = lookup_typename (current_language,
"wchar_t", NULL, 0);
int wcwidth = TYPE_LENGTH (wctype);
- gdb_byte *buf = (gdb_byte *) alloca (wcwidth);
- tem = value_as_address (value);
- if (tem == 0)
+ if (VALUE_LVAL (value) == lval_internalvar
+ && c_is_string_type_p (value_type (value)))
{
- DIAGNOSTIC_PUSH
- DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
- fprintf_filtered (stream, format, "(null)");
- DIAGNOSTIC_POP
- return;
+ str = value_contents (value);
+ len = TYPE_LENGTH (value_type (value));
}
-
- /* This is a %s argument. Find the length of the string. */
- for (j = 0;; j += wcwidth)
+ else
{
- QUIT;
- read_memory (tem + j, buf, wcwidth);
- if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0)
- break;
- }
+ CORE_ADDR tem = value_as_address (value);
+
+ if (tem == 0)
+ {
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, format, "(null)");
+ DIAGNOSTIC_POP
+ return;
+ }
+
+ /* This is a %s argument. Find the length of the string. */
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ gdb_byte *buf = (gdb_byte *) alloca (wcwidth);
+
+ for (len = 0;; len += wcwidth)
+ {
+ QUIT;
+ read_memory (tem + len, buf, wcwidth);
+ if (extract_unsigned_integer (buf, wcwidth, byte_order) == 0)
+ break;
+ }
- /* Copy the string contents into a string inside GDB. */
- str = (gdb_byte *) alloca (j + wcwidth);
- if (j != 0)
- read_memory (tem, str, j);
- memset (&str[j], 0, wcwidth);
+ /* Copy the string contents into a string inside GDB. */
+ gdb_byte *tem_str = (gdb_byte *) alloca (len + wcwidth);
+
+ if (len != 0)
+ read_memory (tem, tem_str, len);
+ memset (&tem_str[len], 0, wcwidth);
+ str = tem_str;
+ }
auto_obstack output;
convert_between_encodings (target_wide_charset (gdbarch),
host_charset (),
- str, j, wcwidth,
+ str, len, wcwidth,
&output, translit_char);
obstack_grow_str0 (&output, "");
In either case, the result of the conversion is a byte buffer
formatted in the target format for the target type. */
- if (TYPE_CODE (fmt_type) == TYPE_CODE_FLT)
+ if (fmt_type->code () == TYPE_CODE_FLT)
{
param_type = float_type_from_length (param_type);
if (param_type != value_type (value))
{
struct gdbarch *gdbarch
= get_type_arch (value_type (val_args[i]));
- struct type *wctype = lookup_typename (current_language, gdbarch,
+ struct type *wctype = lookup_typename (current_language,
"wchar_t", NULL, 0);
struct type *valtype;
const gdb_byte *bytes;
valtype = value_type (val_args[i]);
if (TYPE_LENGTH (valtype) != TYPE_LENGTH (wctype)
- || TYPE_CODE (valtype) != TYPE_CODE_INT)
+ || valtype->code () != TYPE_CODE_INT)
error (_("expected wchar_t argument for %%lc"));
bytes = value_contents (val_args[i]);
{
long val = value_as_long (val_args[i]);
+ DIAGNOSTIC_PUSH
+ DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
+ fprintf_filtered (stream, current_substring, val);
+ DIAGNOSTIC_POP
+ break;
+ }
+ case size_t_arg:
+ {
+ size_t val = value_as_long (val_args[i]);
+
DIAGNOSTIC_PUSH
DIAGNOSTIC_IGNORE_FORMAT_NONLITERAL
fprintf_filtered (stream, current_substring, val);
ui_printf (arg, gdb_stdout);
reset_terminal_style (gdb_stdout);
wrap_here ("");
- gdb_flush (gdb_stdout);
+ gdb_stdout->flush ();
}
/* Implement the "eval" command. */
execute_command (expanded.c_str (), from_tty);
}
+void _initialize_printcmd ();
void
-_initialize_printcmd (void)
+_initialize_printcmd ()
{
struct cmd_list_element *c;
gdb::observers::free_objfile.attach (clear_dangling_display_expressions);
add_info ("address", info_address_command,
- _("Describe where symbol SYM is stored."));
+ _("Describe where symbol SYM is stored.\n\
+Usage: info address SYM"));
add_info ("symbol", info_symbol_command, _("\
Describe what symbol is at location ADDR.\n\
+Usage: info symbol ADDR\n\
Only for symbols with fixed locations (global or static scope)."));
add_com ("x", class_vars, x_command, _("\
Default count is 1. Default address is following last thing printed\n\
with this command or \"print\"."));
-#if 0
- add_com ("whereis", class_vars, whereis_command,
- _("Print line number and file of definition of variable."));
-#endif
-
add_info ("display", info_display_command, _("\
-Expressions to display when program stops, with code numbers."));
+Expressions to display when program stops, with code numbers.\n\
+Usage: info display"));
add_cmd ("undisplay", class_vars, undisplay_command, _("\
Cancel some expressions to be displayed when program stops.\n\
+Usage: undisplay [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means cancel all automatic-display expressions.\n\
\"delete display\" has the same effect as this command.\n\
add_com ("display", class_vars, display_command, _("\
Print value of expression EXP each time the program stops.\n\
+Usage: display[/FMT] EXP\n\
/FMT may be used before EXP as in the \"print\" command.\n\
/FMT \"i\" or \"s\" or including a size-letter is allowed,\n\
as in the \"x\" command, and then EXP is used to get the address to examine\n\
add_cmd ("display", class_vars, enable_display_command, _("\
Enable some expressions to be displayed when program stops.\n\
+Usage: enable display [NUM]...\n\
Arguments are the code numbers of the expressions to resume displaying.\n\
No argument means enable all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &enablelist);
add_cmd ("display", class_vars, disable_display_command, _("\
Disable some expressions to be displayed when program stops.\n\
+Usage: disable display [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means disable all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &disablelist);
add_cmd ("display", class_vars, undisplay_command, _("\
Cancel some expressions to be displayed when program stops.\n\
+Usage: delete display [NUM]...\n\
Arguments are the code numbers of the expressions to stop displaying.\n\
No argument means cancel all automatic-display expressions.\n\
Do \"info display\" to see current list of code numbers."), &deletelist);
add_com ("printf", class_vars, printf_command, _("\
Formatted printing, like the C \"printf\" function.\n\
-Usage: printf \"format string\", arg1, arg2, arg3, ..., argn\n\
+Usage: printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
This supports most C printf format specifications, like %s, %d, etc."));
add_com ("output", class_vars, output_command, _("\
Like \"print\" but don't put in value history and don't print newline.\n\
+Usage: output EXP\n\
This is useful in user-defined commands."));
add_prefix_cmd ("set", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: set VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
Use \"set variable\" for variables with names identical to set subcommands.\n\
&setlist, "set ", 1, &cmdlist);
if (dbx_commands)
add_com ("assign", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: assign VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
Use \"set variable\" for variables with names identical to set subcommands.\n\
/* "call" is the same as "set", but handy for dbx users to call fns. */
c = add_com ("call", class_vars, call_command, _("\
Call a function in the program.\n\
+Usage: call EXP\n\
The argument is the function name and arguments, in the notation of the\n\
current working language. The result is printed and saved in the value\n\
history, if it is not void."));
- set_cmd_completer (c, expression_completer);
+ set_cmd_completer_handle_brkchars (c, print_command_completer);
add_cmd ("variable", class_vars, set_command, _("\
-Evaluate expression EXP and assign result to variable VAR, using assignment\n\
-syntax appropriate for the current language (VAR = EXP or VAR := EXP for\n\
-example). VAR may be a debugger \"convenience\" variable (names starting\n\
+Evaluate expression EXP and assign result to variable VAR.\n\
+Usage: set variable VAR = EXP\n\
+This uses assignment syntax appropriate for the current language\n\
+(VAR = EXP or VAR := EXP for example).\n\
+VAR may be a debugger \"convenience\" variable (names starting\n\
with $), a register (a few standard names starting with $), or an actual\n\
variable in the program being debugged. EXP is any valid expression.\n\
This may usually be abbreviated to simply \"set\"."),
&setlist);
add_alias_cmd ("var", "variable", class_vars, 0, &setlist);
- c = add_com ("print", class_vars, print_command, _("\
+ const auto print_opts = make_value_print_options_def_group (nullptr);
+
+ static const std::string print_help = gdb::option::build_help (_("\
Print value of expression EXP.\n\
+Usage: print [[OPTION]... --] [/FMT] [EXP]\n\
+\n\
+Options:\n\
+%OPTIONS%\n\
+\n\
+Note: because this command accepts arbitrary expressions, if you\n\
+specify any command option, you must use a double dash (\"--\")\n\
+to mark the end of option processing. E.g.: \"print -o -- myobj\".\n\
+\n\
Variables accessible are those of the lexical environment of the selected\n\
stack frame, plus all those whose scope is global or an entire file.\n\
\n\
resides in memory.\n\
\n\
EXP may be preceded with /FMT, where FMT is a format letter\n\
-but no count or size letter (see \"x\" command)."));
- set_cmd_completer (c, expression_completer);
+but no count or size letter (see \"x\" command)."),
+ print_opts);
+
+ c = add_com ("print", class_vars, print_command, print_help.c_str ());
+ set_cmd_completer_handle_brkchars (c, print_command_completer);
add_com_alias ("p", "print", class_vars, 1);
add_com_alias ("inspect", "print", class_vars, 1);
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
&max_symbolic_offset, _("\
-Set the largest offset that will be printed in <symbol+1234> form."), _("\
-Show the largest offset that will be printed in <symbol+1234> form."), _("\
+Set the largest offset that will be printed in <SYMBOL+1234> form."), _("\
+Show the largest offset that will be printed in <SYMBOL+1234> form."), _("\
Tell GDB to only display the symbolic form of an address if the\n\
offset between the closest earlier symbol and the address is less than\n\
the specified maximum offset. The default is \"unlimited\", which tells GDB\n\
&setprintlist, &showprintlist);
add_setshow_boolean_cmd ("symbol-filename", no_class,
&print_symbol_filename, _("\
-Set printing of source filename and line number with <symbol>."), _("\
-Show printing of source filename and line number with <symbol>."), NULL,
+Set printing of source filename and line number with <SYMBOL>."), _("\
+Show printing of source filename and line number with <SYMBOL>."), NULL,
NULL,
show_print_symbol_filename,
&setprintlist, &showprintlist);
add_com ("eval", no_class, eval_command, _("\
-Convert \"printf format string\", arg1, arg2, arg3, ..., argn to\n\
-a command line, and call it."));
+Construct a GDB command and then evaluate it.\n\
+Usage: eval \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\
+Convert the arguments to a string as \"printf\" would, but then\n\
+treat this string as a command line, and evaluate it."));
}
projects / deliverable / binutils-gdb.git / blobdiff